23105344321 has 2 divisors, whose sum is σ = 23105344322. Its totient is φ = 23105344320.

The previous prime is 23105344289. The next prime is 23105344331. The reversal of 23105344321 is 12344350132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12087903025 + 11017441296 = 109945^2 + 104964^2 .

It is a cyclic number.

It is not a de Polignac number, because 23105344321 - 2⁵ = 23105344289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23105344321.

It is not a weakly prime, because it can be changed into another prime (23105344331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11552672160 + 11552672161.

It is an arithmetic number, because the mean of its divisors is an integer number (11552672161).

Almost surely, 2^23105344321 is an apocalyptic number.

It is an amenable number.

23105344321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23105344321 is an equidigital number, since it uses as much as digits as its factorization.

23105344321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 23105344321 its reverse (12344350132), we get a palindrome (35449694453).

The spelling of 23105344321 in words is "twenty-three billion, one hundred five million, three hundred forty-four thousand, three hundred twenty-one".